{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T00:53:01Z","timestamp":1775868781870,"version":"3.50.1"},"reference-count":52,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2011,12,14]],"date-time":"2011-12-14T00:00:00Z","timestamp":1323820800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["APMIS"],"published-print":{"date-parts":[[2012,5]]},"abstract":"<jats:p>Ryder LR, Bartels EM, Woetmann A, Madsen HO, \u00d8dum N, Bliddal H, Danneskiold\u2010Sams\u00f8e B, Ribel\u2010Madsen S, Ryder LP. FoxP3 mRNA splice forms in synovial CD4+ T cells in rheumatoid arthritis and psoriatic arthritis. APMIS 2012; 120: 387\u201396.<\/jats:p><jats:p>Our aim was to elucidate the relative amount of the different splice forms of FoxP3 mRNA in CD4+ T cells in peripheral blood (PB) compared to synovial fluid (SF) in RA and PsA patients. FoxP3 mRNA was measured using a quantitative real\u2010time PCR method. CD4+ T cells were isolated from 17 paired samples of PB and SF from RA and PsA patients, and PB from 10 controls. FoxP3fl and FoxP3\u03942 mRNA was significantly increased (6.7 and 2.1\u2010fold, respectively) in PB CD4+ T cells from RA patients compared to controls. FoxP3fl and \u03942 mRNA in SF CD4+ T cells was increased compared to controls in sero\u2010negative RA and PsA, but not in sero\u2010positive RA patients, who had a high FoxP3 expression in both PB and SF. The FoxP3\u03942\u03947 mRNA was barely detectable in patient samples, and not at all in healthy individuals. We provide evidence of an increased expression of FoxP3 splice forms in synovial CD4+ T cells from RA patients. A skewed, high expression profile of FoxP3, but not CTLA\u20104, in sero\u2010negative RA and PsA, indicates that synovial CD4+ T cells may represent unique subsets of T cells which have been induced locally or selectively recruited to the joint.<\/jats:p>","DOI":"10.1111\/j.1600-0463.2011.02848.x","type":"journal-article","created":{"date-parts":[[2011,12,14]],"date-time":"2011-12-14T07:20:38Z","timestamp":1323847238000},"page":"387-396","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["FoxP3 mRNA splice forms in synovial CD4+ T cells in rheumatoid arthritis and psoriatic arthritis"],"prefix":"10.1111","volume":"120","author":[{"given":"L REBEKKA","family":"RYDER","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ELSE 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